How to get rid of an uninstalled program's now-unneeded/un-used dependencies

[Martin J Hooper]

Stephen R Laniel wrote:

> I'm told that aptitude automatically removes orphaned
> programs, but I've not delved into aptitude.

Certainly does - Appraently keeps a db of all the packages you install 
and their deps and can remove unused deps when you install a package.

Only works if you install using aptitude from the start though.

basically replace apt-get commands with aptitude.

ie apt-get install becomes aptitude install